Another vote for WKRP.
And St. Elsewhere.
Star Trek: The Original Series, please.
I was in Germany about a year ago, and one of the TV stations was running old Bob Ross reruns every night at about 1:00. Most of the American shows there are dubbed, but not Bob; probably because it would be absolutely impossible to sound that mellow in German.
And does anybody remember Johnny Bago?
The previously mentioned “Nip/Tuck (Season 1)” and “Homicide: Life on the Street (Seasons 4-5)” recently had marathons broadcast on Japanese cable/satellite channels. Other marathons during the New Year’s holiday included: “The Shield (Season 5)”, “Roswell (Season 2)”, “Ally McBeal (Season 5)”, “24 (Season 2)”, “Curb Your Enthusiasm (Season 1)”, etc.
Mystery Science Theater 3000 ('cause it’ll never happen)
Get Smart ('cause I haven’t seen it forever and I don’t know when the DVD will be out)
Freakazoid ('cause it’s funny and I haven’t seen it in ages)
Come over to my house.
I thought I heard that Cosmos was going to be rebroadcast but with new fx sequences done. (there will be a lot more dewbacks)
My choices
In Living Color
The Edge (short lived Comedy Series with Julie Brown, Jennifer Aniston, Wayne Knight and Alan Ruck)
The Lawerence Welk Show
The Rat Patrol (in color)
The Muppet Show
The David Letterman morning show
Star Blazers
G.L.O.W.
and of course
Swan’s Crossing
Another vote for Have Gun Will Travel. Also…
**The Courtship of Eddie’s Father
Hart to Hart
Remington Steele**
Lost in Space
Hmmm -
Even of my favorite shows, if I watch too many of them in a row, I get weary. That said:
Quantum Leap
Barney Miller
Dead Like Me (which btw I discovered on one of the Showtime channels last night around 12:45am - ok this morning at 12:45am - two eps btb 
)
Older episodes of The Carol Burnett Show - and the full hour long versions, not the half hour pale imitation “Carol & Friends”
Laugh-In
That’s all I can think of now - I’ll be back if I think of more